Description: Plants reach 50 cm in height, are erect from crustose holdfasts, and are flattened or terete depending on the species. Central axial cells
remain prominent throughout the fronds, and each bears either (2-)3 or 4 periaxial cells, depending again on the species. Spermatangial clusters occur on uniseriate filaments, those of S. furcata (Harvey) J. Agardh also bearing tetrasporangial primordia in addition to spermatangia (Womersley 1971), these being the only tetrasporangia reported for the genus (Searles 1968).

Information kindly contributed by G.T. Kraft but may now be outdated.

Comments: Distribution: Both species occur subtidally along southern Australia from southwest Western Australia to Victoria.

Numbers of names and species: There are 8 species names in the database at present.

Names: ('C' indicates a name that is accepted taxonomically; 'S' a homotypic or heterotypic synonym; 'U' indicates a name of uncertain taxonomic status, but which has been subjected to some verification nomenclaturally; 'P' indicates a preliminary AlgaeBase entry that has not been subjected to any kind of verification. For more information on a species click on it to activate a link to the Species database):

Verification of data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

Contributors
Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera,
organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA)
and intended to be published in CD format.
These AlgaeBase descriptions are now being continually updated, and each current contributor is identified above.
The PSA and AlgaeBase warmly acknowledge the generosity of all past and present contributors and particularly the work of Dr Parker.